Open AccessResearch on reducing PAPR of QAM‐OFDM radar‐communication integration sharing signal
Author(s) -
Yang Yongjun,
Mei Jinjie,
Hu Dengpeng,
Lei Yunlong,
Luo Xiaoli
Publication year - 2019
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2019.0726
Subject(s) - computer science , electronic engineering , quadrature amplitude modulation , qam , transmitter , orthogonal frequency division multiplexing , signal (programming language) , constellation diagram , modulation (music) , constellation , radar , bit error rate , algorithm , telecommunications , engineering , physics , acoustics , channel (broadcasting) , decoding methods , astronomy , programming language
In order to solve the problem of high peak‐to‐average power ratio (PAPR) of the sharing signal for radar‐communication integration based on quadrature amplitude modulation‐orthogonal frequency division multiplexing modulation, according to the theoretical model of the sharing signal, the authors analyse the PAPR, subsequently employing the active constellation extension algorithm to suppress the PAPR of the sharing signal. The simulation results show that, with designing the number of iterations reasonably, the active constellation expansion algorithm will effectively reduce the PAPR of the sharing signal. Meanwhile, for radar sub‐systems, the target detection performance and the transmitter power are less affected. For communication sub‐systems, the error vector magnitude is small, and the bit error rate of the system is comparable to the original signal.